Seventy-two hours of video are now uploaded to YouTube every minute.
A powerful solar telescope billed as the largest in Europe has opened on Spain's Canary Islands.
Facebook has become a public company, after listing its shares on the NASDAQ exchange in New York.
Refusing to 'allow his tribe the road', once African chief's determination to save a way of life. Ray Kennedy with the "rain people" in Burkina Faso, west Africa.
White births in the United States are no longer in the majority, according to US Census Bureau data.
A dramatic sea rescue has taken place in Summerland, California, after a photoshoot involving a horse went wrong.
RTÉ's Ray Kennedy reports from the Sahel Saharan region of west Africa as aid agencies race to prevent a famine that could affect 15 million.
The Smithwick Tribunal is drawing to a close but there is still no definite end date.
Aid agencies in west Africa are demanding international help as clinics report a rise in cases of malnutrition and ancient tribes are forced to abandon their villages
Across the Sahel Saharan region of west Africa aid agencies are in a race to prevent a famine that could affect 15 million.
Orangutans at a south Florida attraction are learning new ways to communicate, making sign language a thing of the past.
The Olympic flame was lit in Olympia in Greece today, signalling the final countdown to the start of this year's summer Games in London.
Astronomers from Queen's University in Belfast have uncovered evidence of a supermassive black hole devouring a star that wandered too close.